如何在VS2010中的新web.config配置中使用applicationSettings？

Question

I'm used to use web deployment projects. Currently I am developing a new web application with VS2010 and want to try to get along with the new web.config principle and deployment issues.

How can I replace a simple setting like

<applicationSettings>
  <NAMESPACE>
   <setting name="Testenvironment" serializeAs="String">
    <value>True</value>
   </setting>
  </NAMESPACE>
</applicationSettings>

I want to have this setting to be set to True in Debug, and false in Release. How must the entries in the Web.Debug.config and Web.Release.Config look like?

And by the way : Is there some documentation about the new web.config issue? Can't seem to google for the correct keywords.

Answer 1

The best way would be to do the following:

<applicationSettings> 
  <NAMESPACE> 
   <setting name="Testenvironment" serializeAs="String"  xdt:Transform="Replace" xdt:Locator="Match(name)"> 
    <value>True</value> 
   </setting> 
  </NAMESPACE> 
</applicationSettings> 

Rather than Zubeyir suggestion as this one will only replace the specifed setting rather than replacing the WHOLE of the applicationSettings section.

Answer 2

You could also use this way; for the prod environment for example.

<applicationSettings xdt:Transform="Replace">
  <NAMESPACE> 
   <setting name="Testenvironment" serializeAs="String"> 
    <value>False</value> 
   </setting> 
  </NAMESPACE> 
</applicationSettings> 

Regards.

Answer 3

You should copy this setting to both web config files - Web.Debug.config and Web.Release.config and put the transformation attributes xdt:Transform="SetAttributes" xdt:Locator="Match(name)" .

You can see this video tutorial - http://chriskoenig.net/index.php/2010/04/08/how-do-i-web-config-transformations-in-vs2010/

Hope that helps.

Answer 4

Here is a link with lots of samples on this theme: http://msdn.microsoft.com/en-us/library/dd465326.aspx .

But there seems to be a problem especially with Web.config transformations and applicationSettings: All answers on this query using xdt-Transform=“Replace” have the problem that they introduce additional white space into the deployed Web.config because of XML formatting. This leads to faulty behavior if you consume the resulting settings. There seems to be no solution. Here is my unanswered question on this problem: VS 2010 configuration transformation produces unwanted white space during deployment .

Answer 5

您还可以查看如何使用web.config转换来替换appSettings和connectionStrings